EFFECT OF P-FERTILIZER AND MICRONUTRIENT (Fe AND Mo) ON SEEDS YIELD OF SOYBEAN AND ITS QUALITY UNDER SANDY SOIL CONDITION

Abstract

A two field experiments were carried out during the two successive growing summer seasons of 2013 and 2014 in sandy soil at El-Sharawy Village , EL-Bostan area-Noubaria Region, Elbeheira Governorate (Latitude 30° 43' 22.01" N, Longitude 30° 16' 44.50" E) to study the effect of spraying aqueous solutions of iron (Fe) at 20mg L-1 and seed treatment with Mo at 0.5 g kg-1 seedsand three levels of phosphorus (0, 15and 30 kg P2O5/fed) as single super phosphate on seeds yield and yield components of soybean (Glycine max L.), c.v. Giza 111. The experiment was laid out in split plot design with three replications.Yield and yield components as well as chemical composition of soybean seeds were significantly increased by application of P-levels or micronutrient. The result revealed that combined use of seed treatment with molybdenum (0.5 g/kg seed) with foliar spray of iron (Fe) significantly enhanced the growth and yield attributes of soybean and registered 23.59% and 21.59% improvement in number of pod and pod weight /plant respectively over control.Results indicated that iron and molybdenum had a significant effect on the increase of weight of pods/ plants (g), weight of 100- seed (g), seed and biological yields (ton/fed.). The highest seed weight by 56.25% over control, also the highest values of seed nitrogen and seed protein content were recorded by combined application of 30 kg P2O5 fed-1 +Mo + Fe. The interaction between Mo and Fe combined with P-levels had significant effect on the increase of seed yield / fed and weight of seeds/plant and protein yield/fed. The highest values were recorded when soybean plants were spraying with Fe and seed treatment with Mo and treated with 30 kg P2O5 fed- 1.